Bike helmets for a 64 cm head
A 64 cm head is 25.2 inches. Of the 53 helmets we track, 14 fit you — and here is the exact size to order in each brand.
14 helmets that fit a 64 cm head
Sorted by price. The size in the third column is the one to order — it is the size whose range is centred closest to 64 cm.
| Brand | Model | Your size | That size covers | Riding | Safety (VT) | Price | |
|---|---|---|---|---|---|---|---|
| Lazer | CityZen KinetiCore | XL snug | 61-64 cm (24.1-25.1 in) | Urban | ★★★☆☆ 3/5 | ~€65 | View |
| Smith | Signal MIPS | XL | 61-65 cm (24.1-25.5 in) | Road | ★★★☆☆ 3/5 | ~€68 | View |
| Smith | Convoy MIPS | XL | 61-65 cm (24.1-25.5 in) | MTB | Not rated | ~€68 | View |
| Lazer | Tonic KinetiCore | XL snug | 61-64 cm (24.1-25.1 in) | Road, Urban | ★★★☆☆ 3/5 | ~€70 | View |
| Bell | 4Forty MIPS | XL | 61-65 cm (24.1-25.5 in) | MTB | Not rated | ~€87 | View |
| Giro | Radix MIPS | XL | 63-65 cm (24.9-25.5 in) | MTB | Not rated | ~€87 | View |
| MET | Idolo MIPS | XL snug | 59-64 cm (23.3-25.1 in) | Road | Not rated | ~€100 | View |
| Smith | Persist MIPS | XL | 61-65 cm (24.1-25.5 in) | Road | Not rated | ~€109 | View |
| Lazer | Strada KinetiCore | XL snug | 61-64 cm (24.1-25.1 in) | Road, Gravel, Urban | ★★★☆☆ 3/5 | ~€120 | View |
| Giro | Syntax MIPS | XL | 63-65 cm (24.9-25.5 in) | Road, Gravel | ★★★☆☆ 3/5 | ~€150 | View |
| Trek | Circuit WaveCel | XL | 60-66 cm (23.7-25.9 in) | Road | ★★★★☆ 4/5 | ~€157 | View |
| Lazer | Jackal KinetiCore | XL snug | 61-64 cm (24.1-25.1 in) | MTB | ★★★☆☆ 3/5 | ~€190 | View |
| Trek | Rally WaveCel | XL | 60-66 cm (23.7-25.9 in) | MTB | ★★★★☆ 4/5 | Check price | View |
| Giro | Fixture II MIPS XL | Universal XL | 58-65 cm (22.9-25.5 in) | MTB, Urban | Not rated | Check price | View |
5 models are marked “snug”: 64 cm sits in the last 0.75 cm of that size, so the retention dial will be near its limit. It fits, but there is little room to spare.
Want to filter by riding style, budget or a specific model? The finder does all three, starting from your 64 cm.
Open the finder at 64 cmSo close
These models miss 64 cm by less than 1.5 cm. Head shape and padding thickness can swing a fit by roughly that much, so they are worth trying on in a shop — but we will not tell you they fit.
| Brand | Model | Model range | How far off |
|---|---|---|---|
| Fox | Crossframe Pro | 51-63 cm (20.1-24.8 in) | too small by 1.0 cm |
| Giro | Eclipse Spherical | 51-63 cm (20.1-24.8 in) | too small by 1.0 cm |
| Giro | Manifest Spherical | 51-63 cm (20.1-24.8 in) | too small by 1.0 cm |
| Fox | Mainframe MIPS | 51-63 cm (20.1-24.8 in) | too small by 1.0 cm |
| Fox | Speedframe | 51-63 cm (20.1-24.8 in) | too small by 1.0 cm |
| Endura | Hummvee Plus MIPS | 51-63 cm (20.1-24.8 in) | too small by 1.0 cm |
| Bell | Avenue MIPS | 50-63 cm (19.7-24.8 in) | too small by 1.0 cm |
| Giro | Agilis MIPS | 51-63 cm (20.1-24.8 in) | too small by 1.0 cm |
Is 64 cm a big head?
Yes. 64 cm (25.2 in) is in the top few percent of adult heads, and it is where most brands stop: only 26% of the helmets we track go that far. That is the whole reason this site exists — the founder wears 63 cm and got tired of reading “one size fits all” on helmets that did not.
See also: every helmet we know of for big heads.
Measuring, in one minute
Wrap a tailor's tape (or a piece of string you then measure against a ruler) around your head about 1-2 cm above the eyebrows and above the ears — the widest part. Keep it level and snug, not tight. If you land between two numbers, use the bigger one: a helmet's dial can take up slack, it cannot create room.
64 cm is 25.2 inches. American size charts are usually written in inches, European ones in centimetres, and both describe the same measurement.